4th Grade
Math
Math
which shape has 3 equal sides?
equilateral triangle
what is the mode among numbers below?
23; 34; 21; 34; 25; 34; 21; 55; 67;
34
can you use the ruler to measure the length of the straight line?
No
what is the x-coordiante of the point at (4 , 10)
4
what is the Chinese name of Mr.Clark
赵一鸣
what is the fraction of 0.06?
6/100
What is 4.25 + 6.13?
10.38
Calculate the mean among numbers below
26; 18; 32; 24; 20
24
9168 + 2915
12083
what is the sum of interior angles of the rectangle?
360
19.06 - 13.14
5.92
Which digit is in the hundredths place?
12,485.96
6
What is the place value of the 4 in 3,427,891?
Hundred thousands place
199 x 4
796
612,532 + 44,622
657,154
What is 216 divided by 8?
27
What is 602,564 - 129,875 ?
472,689
The digit 6 is in what place?
1,623,985
hundred thousands
Write all prime numbers that are less than 35.
2; 3; 5; 7; 11; 13; 17; 19; 23; 29; 31;
What is 6091 x 75?
456825
Find the highest common multiple of 72 and 108
216
What is the 273952 divided by 32?
8561
What is the 32/25 minus 27/30? Give the simplest fraction.
19/50
Calculate the area of square with side length 4.02cm.
16.1604
Magnus has to play 15 games in a chess tournament. At some point during the tournament he has won half of the games he has played, he has lost one third of the games he has played and two have ended in a draw. How many games does Magnus still have to play?
小马必须在象棋比赛中完成15场比赛。在比赛的某个时刻，他获胜的局数是参与过的比赛 的一半，他失败的局数是参与过的比赛的三分之一，而有两场比赛都以平局结束。小马还剩多少 场比赛没完成?
3
The sum of the ages of Kate and her mother is 36. The sum of the ages of her mother and her grandmother is 81. How old was her grandmother when Kate was born?
Kate 和她妈妈的岁数相加时，得到的和是 36。 Kate 的妈妈和 Kate 的奶奶的岁数相加 时，得到的和是 81。请问 Kate 出生时，她奶奶几岁?
45
Nick wants to arrange the numbers 2, 3, 4, . . . , 10 into several groups such that the sum of the numbers in each group is the same. What is the largest number of groups he can get?
Nick 想把 2, 3, 4, . . . , 10 这些数字分成数组，使得每一组里的数字之和是一样的。请问他 最多能分成多少组?
3
A little kangaroo is playing with his calculator. He starts with the number 12. He multiplies or divides the number by 2 or 3 for 60 times in a row. Which of the following results cannot be obtained?
一只小袋鼠正在玩它的计算机。它以12这个号码开始。这个号码被乘或除与2或3连 续60次。请问以下哪个号码不可能被获得?
(A) 12 (B) 18 (C) 36 (D) 72 (E) 108
C
A bag contains only red marbles and green marbles. For any 5 marbles we pick, at least one is red. For any 6 marbles we pick, at least one is green. What is the largest number of marbles that the bag can contain?
一个袋子里有一些红色和一些青色的弹珠。每当我们从袋子里选择任何 5 颗弹珠，肯定 至少有一颗弹珠是红色的。每当我们从袋子里选择任何 6 颗弹珠，肯定至少有一颗弹珠是青 色的。请问袋子里最多有多少个弹珠?
9
Granny has 10 grandchildren. Alice is the eldest. One day, Granny notices that her grandchildren all have different ages. If the sum of her grandchildrens’ ages is 180, what is the youngest Alice could be?
奶奶有10个孙子女。Alice是其中最年长的。一天，奶奶发现她的孙子女的年龄都不同。 如果她的孙子女的年龄的和是180，那么Alice至少几岁?
23